November 23 is known as Fibonacci Day because when the date is written in the mm/dd format (11/23), the digits in the date form the beginning of the Fibonacci sequence: 1, 1, 2, 3.

We don’t have to tell you that the Fibonacci sequence is a sequence of numbers, defined by a linear recurrence equation, where a number is the sum of the two numbers before it. For example: 1, 1, 2, 3 ... is the Fibonacci sequence. Here, 2 is the sum of the two numbers before it (1+1). Similarly, 3 is the sum of the two numbers before it (1+2). There are many fascinating things about the sequence. Perhaps most interesting is the fact that the ratio of subsequent Fibonacci numbers converges on the golden ratio, phi (Ø = 1.618…), as the number of terms approaches infinity.

Click on the short video below that shares our favorite recipe for phi-lling Fibo-nachos. (Really loving that cheese, huh?) By the time you’re done, you’ll learn how to make golden, rectangle tortilla chips and use the Fibonacci sequence to build delicious Fibo-nachos. As you may expect, we’ve made certain that our Fibo-nachos include the golden ratio of chips to cheese.

Be sure and try our recipe with your students for a fun and tasty way to teach the Fibonacci sequence.